Patents by Inventor Seishi Kosegawa
Seishi Kosegawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20200288631Abstract: A riding type vehicle has a driving source, a left wheel and a right wheel, a transmission configured to receive power from the driving source to independently operate and drive the left wheel and the right wheel with regard to a rotation direction and a rotation speed, and caster wheels separately provided in a front-rear direction with respect to the left wheel and the right wheel, the riding type vehicle including two first sensors arranged on both left and right sides more to a front side than a rear end of the vehicle, the two first sensors configured to detect an obstacle target located on a rear side, the obstacle target being a target becoming an obstacle at the time of reversing or turning.Type: ApplicationFiled: March 23, 2020Publication date: September 17, 2020Inventors: Ryoichi KAWAI, Hirohiko KAWADA, Seishi KOSEGAWA, Koga YAMANE, Etsuo MIYAKE, Masaki WATANABE, Koji SAKATA, Kenji SHIBA, Kosuke ONODA, Hiroki MAEHARA
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Patent number: 10638661Abstract: A riding type vehicle has a driving source, a left wheel and a right wheel, a transmission configured to receive power from the driving source to independently operate and drive the left wheel and the right wheel with regard to a rotation direction and a rotation speed, and caster wheels separately provided in a front-rear direction with respect to the left wheel and the right wheel, the riding type vehicle including two first sensors arranged on both left and right sides more to a front side than a rear end of the vehicle, the two first sensors configured to detect an obstacle target located on a rear side, the obstacle target being a target becoming an obstacle at the time of reversing or turning.Type: GrantFiled: March 29, 2017Date of Patent: May 5, 2020Assignee: KANZAKI KOKYUKOKI MFG. CO., LTD.Inventors: Ryoichi Kawai, Hirohiko Kawada, Seishi Kosegawa, Koga Yamane, Etsuo Miyake, Masaki Watanabe, Koji Sakata, Kenji Shiba, Kosuke Onoda, Hiroki Maehara
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Publication number: 20170280621Abstract: A riding type vehicle has a driving source, a left wheel and a right wheel, a transmission configured to receive power from the driving source to independently operate and drive the left wheel and the right wheel with regard to a rotation direction and a rotation speed, and caster wheels separately provided in a front-rear direction with respect to the left wheel and the right wheel, the riding type vehicle including two first sensors arranged on both left and right sides more to a front side than a rear end of the vehicle, the two first sensors configured to detect an obstacle target located on a rear side, the obstacle target being a target becoming an obstacle at the time of reversing or turning.Type: ApplicationFiled: March 29, 2017Publication date: October 5, 2017Inventors: Ryoichi KAWAI, Hirohiko KAWADA, Seishi KOSEGAWA, Koga YAMANE, Etsuo MIYAKE, Masaki WATANABE, Koji SAKATA, Kenji SHIBA, Kosuke ONODA, Hiroki MAEHARA
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Patent number: 9164624Abstract: A light-receiving device 10 includes a plurality of light-receiving units 10A, 10B, and 10C, in which, in the element substrate 11A constituting the light-receiving unit 10A, the rear surface of a second terminal forming area 16Ac, upon which a connection pad PAc is formed, is bonded to the front surface of a cover glass 14B covering a plurality of light-receiving elements 12 constituting the light-receiving unit 10B, and in the element substrate 11C constituting the light-receiving unit 10C, the rear surface of a first terminal forming area 16Cb, upon which a connection pad PCb is formed, is bonded with the front surface of the cover glass 14B of the light-receiving unit 10B. As a result, an increase in manufacturing cost and a decrease in yield are mitigated so that it is possible to provide a light-receiving device upon which light-receiving elements are disposed continuously over a long distance at a high density, as well as an optical touch panel device provided with the same.Type: GrantFiled: June 6, 2011Date of Patent: October 20, 2015Assignee: SHARP KABUSHIKI KAISHAInventors: Seishi Kosegawa, Takehiro Murao, Toshiyuki Yoshimizu
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Patent number: 8823684Abstract: Disclosed are: a position detection system having improved flexibility in selection of line sensors; and others. In the position detection system (PM) of the present invention, a phosphor (11) which can excite invisible light (UV light) that is light emitted from an LED (23) is arranged on an optical path between the LED (23) and a light receiving element (26).Type: GrantFiled: June 29, 2010Date of Patent: September 2, 2014Assignee: Sharp Kabushiki KaishaInventors: Atsuhito Murai, Takehiro Murao, Seishi Kosegawa, Yukihiko Nishiyama, Hideki Kitagawa
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Patent number: 8477263Abstract: A liquid crystal display device including a plurality of pixels arranged in a matrix along a first direction and a second direction which are perpendicular to each other a TFT substrate, a counter substrate, a liquid crystal layer, a plurality of microlenses, and a backlight provided on a side of the plurality of microlenses which is opposite to the TFT substrate. The plurality of microlenses includes a plurality of lenticular lenses extending in the first direction, the plurality of lenticular lenses being arranged side by side along the second direction.Type: GrantFiled: March 30, 2009Date of Patent: July 2, 2013Assignee: Sharp Kabushiki KaishaInventors: Takehiro Murao, Naru Usukura, Seishi Kosegawa, Tadashi Nemoto, Toshiyuki Yoshimizu
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Publication number: 20130082982Abstract: A light-receiving device 10 includes a plurality of light-receiving units 10A, 10B, and 10C, in which, in the element substrate 11A constituting the light-receiving unit 10A, the rear surface of a second terminal forming area 16Ac, upon which a connection pad PAc is formed, is bonded to the front surface of a cover glass 14B covering a plurality of light-receiving elements 12 constituting the light-receiving unit 10B, and in the element substrate 11C constituting the light-receiving unit 10C, the rear surface of a first terminal forming area 16Cb, upon which a connection pad PCb is formed, is bonded with the front surface of the cover glass 14B of the light-receiving unit 10B. As a result, an increase in manufacturing cost and a decrease in yield are mitigated so that it is possible to provide a light-receiving device upon which light-receiving elements are disposed continuously over a long distance at a high density, as well as an optical touch panel device provided with the same.Type: ApplicationFiled: June 6, 2011Publication date: April 4, 2013Applicant: SHARP KABUSHIKI KAISHAInventors: Seishi Kosegawa, Takehiro Murao, Toshiyuki Yoshimizu
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Publication number: 20120280940Abstract: Disclosed are: a position detection system having improved flexibility in selection of line sensors; and others. In the position detection system (PM) of the present invention, a phosphor (11) which can excite invisible light (UV light) that is light emitted from an LED (23) is arranged on an optical path between the LED (23) and a light receiving element (26).Type: ApplicationFiled: June 29, 2010Publication date: November 8, 2012Applicant: SHARP KABUSHIKI KAISHAInventors: Atsuhito Murai, Takehiro Murao, Seishi Kosegawa, Yukihiko Nishiyama, Hideki Kitagawa
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Patent number: 8279377Abstract: A liquid crystal display device of high image quality is provided at a low cost, in which the viewing angle is restricted only in a specific direction. A liquid crystal display device of the present invention, which has a plurality of pixels in a matrix arrangement, includes: a first substrate; a second substrate; a liquid crystal layer interposed between the first substrate and the second substrate; and a plurality of microlenses provided on a surface of the first substrate which is opposite to the liquid crystal layer, the microlenses being arranged so as to correspond to the plurality of pixels, and each of the microlenses having a curved surface configured to collect incoming light, wherein d satisfies the following relationship: d>p.((2n)2?1)½ where d is a thickness of the first substrate, p is an arrangement pitch of the plurality of pixels, and n is a refractive index of the major material of the first substrate.Type: GrantFiled: January 23, 2009Date of Patent: October 2, 2012Assignee: Sharp Kabushiki KaishaInventors: Naru Usukura, Toshiyuki Yoshimizu, Seishi Kosegawa, Tadashi Nemoto, Takehiro Murao
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Patent number: 8174641Abstract: A liquid crystal display panel according to the present invention includes: a liquid crystal display panel including an electrical element substrate on which switching elements for controlling the light transmittance of a liquid crystal layer are formed so as to respectively correspond to pixels; a microlens array provided on a light-incident side of the liquid crystal display panel; a support provided on the light-incident side of the liquid crystal display panel so as to be in a peripheral region of the microlens array; a rear-face side optical film attached to the liquid crystal display panel via the support; and a wiring connection substrate mounted to the electrical element substrate. The electrical element substrate includes an overhang which projects from the support in the direction of the wiring connection substrate, and the wiring connection substrate is mounted to the overhang.Type: GrantFiled: August 28, 2007Date of Patent: May 8, 2012Assignee: Sharp Kabushiki KaishaInventors: Seishi Kosegawa, Naru Usukura, Takehiro Murao
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Publication number: 20110316005Abstract: In a liquid crystal display apparatus (1) including a touch panel, a liquid crystal panel (display portion) (2) having a plurality of pixels, and a backlight device (backlight portion) (3) that irradiates the liquid crystal panel (2) with illumination light, the touch panel includes optical sensors (25) that are provided in pixel units and that detect infrared light. Furthermore, the backlight device (3) includes white light-emitting diodes (first light-emitting diode portion) (26) which can emit white light, infrared light-emitting diodes (second light-emitting diode portion) (27) which emit infrared light, and a substrate (28) on which the white light-emitting diodes (26) and the infrared light-emitting diodes (27) are integrally provided.Type: ApplicationFiled: November 12, 2009Publication date: December 29, 2011Applicant: SHARP KABUSHIKI KAISHAInventors: Takehiro Murao, Naru Usukura, Akizumi Fujioka, Akinori Kubota, Seishi Kosegawa, Toshiyuki Yoshimizu
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Publication number: 20110069253Abstract: One of the objects is to improve the light utilization efficiency of a liquid crystal display panel with microlenses. A liquid crystal display device of the present invention, including a plurality of pixels arranged in a matrix along a first direction and a second direction which are perpendicular to each other, includes a TFT substrate, a counter substrate, a liquid crystal layer, a plurality of microlenses, and a backlight provided on a side of the plurality of microlenses which is opposite to the TFT substrate. The plurality of microlenses includes a plurality of lenticular lenses extending in the first direction, the plurality of lenticular lenses being arranged side by side along the second direction. The backlight includes a prism sheet placed over a first surface of the light guide plate which is closer to the microlens.Type: ApplicationFiled: March 30, 2009Publication date: March 24, 2011Inventors: Takehiro Murao, Naru Usukura, Seishi Kosegawa, Tadashi Nemoto, Toshiyuki Yoshimizu
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Publication number: 20110025956Abstract: A liquid crystal display device of high image quality is provided at a low cost, in which the viewing angle is restricted only in a specific direction. A liquid crystal display device of the present invention, which has a plurality of pixels in a matrix arrangement, includes: a first substrate; a second substrate; a liquid crystal layer interposed between the first substrate and the second substrate; and a plurality of microlenses provided on a surface of the first substrate which is opposite to the liquid crystal layer, the microlenses being arranged so as to correspond to the plurality of pixels, and each of the microlenses having a curved surface configured to collect incoming light, wherein d satisfies the following relationship: d>p·((2n)2?1)1/2 where d is a thickness of the first substrate, p is an arrangement pitch of the plurality of pixels, and n is a refractive index of the major material of the first substrate.Type: ApplicationFiled: January 23, 2009Publication date: February 3, 2011Inventors: Naru Usukura, Toshiyuki Yoshimizu, Seishi Kosegawa, Tadashi Nemoto, Takehiro Murao
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Publication number: 20100283941Abstract: A vertically aligned type liquid crystal display panel with wide viewing angles and high display quality can be provided with high production efficiency. A liquid crystal display panel of the present invention includes: a liquid crystal layer of a vertically aligned type; a light-incident side substrate and a light-outgoing side substrate which oppose each other via the liquid crystal layer; a microlens array provided on a light-outgoing side of the light-outgoing side substrate, which includes a plurality of microlenses; an optical film which includes a first polarizing plate provided on a light-outgoing side of the microlens array; and an optical film which includes a second polarizing plate provided on a light-incident side of the light-incident side substrate.Type: ApplicationFiled: December 12, 2008Publication date: November 11, 2010Inventors: Tadashi Nemoto, Seishi Kosegawa, Naru Usukura, Takehiro Murao, Satoshi Shibata, Takuma Tomotoshi
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Publication number: 20100020263Abstract: There is provided a liquid crystal display panel with microlenses in which deformation, peeling, and the like of an optical film are not likely to occur and which has a good displaying quality. A liquid crystal display panel according to the present invention includes: a microlens array provided on a light-incident side of a liquid crystal display panel; a support provided on the light-incident side of the liquid crystal display panel so as to surround the microlens array; and an optical film attached to the liquid crystal display panel via the support. A gap is formed between the microlens array and the optical film; at least one vent hole connecting a space outside the support and the gap is formed in the support; and, when seen perpendicularly with respect to the plane of the liquid crystal display panel, the vent hole extends in a bending manner or the vent hole extends in an oblique direction with respect to an inner face of the support.Type: ApplicationFiled: July 23, 2007Publication date: January 28, 2010Inventors: Takehiro Murao, Seishi Kosegawa, Naru Usukura
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Publication number: 20100007815Abstract: There is provided a liquid crystal display panel with microlenses in which deformation, peeling, and the like of an optical film are not likely to occur and which has a good displaying quality. A liquid crystal display panel according to the present invention includes: a microlens array provided on a light-incident side of a liquid crystal display panel; a support provided on the light-incident side of the liquid crystal display panel so as to surround the microlens array; and an optical film attached to the liquid crystal display panel via the support. A gap is formed between the microlens array and the optical film; at least one vent hole connecting a space outside the support and the gap is formed in the support; and, when seen perpendicularly with respect to the plane of the liquid crystal display panel, the vent hole extends in a bending manner or the vent hole extends in an oblique direction with respect to an inner face of the support.Type: ApplicationFiled: August 28, 2007Publication date: January 14, 2010Inventors: Seishi Kosegawa, Naru Usukura, Takehiro Murao
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Patent number: 6028580Abstract: A driving circuit integrated type active-matrix liquid crystal display device is arranged such that a buffer composed of a P-channel thin film transistor and an N-channel thin film transistor that are connected in series is adopted for the P-channel thin film transistor and an N-channel thin film transistor; at least one of the P-channel thin film transistor and the N-channel thin film transistor is composed of a plurality of thin film transistors that are connected in parallel; and at least one of a power source line and an output line connected to the plurality of thin film transistors connected in parallel is formed in a wiring pattern composed of a main wiring section and a branched wiring section branched into respective thin film transistors. The described arrangement permits a line-shaped defect due to a defective thin film transistor which constitutes a buffer of the drive circuit to be eliminated with ease, while improving a yield of panels.Type: GrantFiled: September 25, 1996Date of Patent: February 22, 2000Assignee: Sharp Kabushiki KaishaInventors: Seishi Kosegawa, Toshihiro Yamashita, Yutaka Takafuji